The children ＿＿＿＿＿＿ very quiet； I wonder what they ＿＿＿＿up to.
| A．were； are being | B．are being； are |
| C．are； do | D．are being； do |
—Are my clothes too casual?
—No. You can go ____you are.
| A．as | B．what | C．that | D．where |
How ___I help them to understand when they won’t listen to me?
| A．can | B．would | C．may | D．must |
In summer, food will go bad if________in room temperature.
| A．leaving | B．left | C．being left | D．having left |
QQ, you can chat with your friends, makes communication easy.
| A．why | B．which | C．that | D．where |
Mike must be angry with me, for he walked me without even saying hello.
| A．past | B．on | C．at | D．over |